Device for liquid treatment of filamentary material



Dec. 31, 1946. H. J. M DERMOTT ETAL 2,413,413

DEVICE FOR LIQUID TREATMENT FILAMENTARY MATERIAL Filed April 14, 1942 MENTOR. I

HENF'YJ MEDEPMU TT Patented Dec. 31,

DEVICE FOR. LIQUID TREATMENT OF FILAMENTARY MATERIAL l-lenry J. McDermott, Prospect Park, and Richard W. Stanley, Drexel Hill, Pa., assignors to American Viscose Corporation, Wilmington, Del., a

corporation of Delaware Application April 14, 1942, Seria'i No. 438.924

This invention relates to an improved device for applying liquids for the treatment of filamentary material and is particularly concerned with the application of liquids to running lengths of single filaments, bundles of twisted or untwisted filaments, yarns and the like.

In applicants copending application, Serial No. 438,923, filed April 14, 1942, patented June 5, 1945, No. 2,377,655, there has been shown a form of device for applying a jet of liquid to the filamentary material in which the jet is directed to the course of the material at a slight angle. When low denier yarns or filamentary bundles are treated by such a form of device, it is necessary to use correspondingly smaller calibre orifices and/or reduced pressure to prevent the application of a needlessly excessive amount of liquid. Under these conditions, the orifices tend to clog with the result that the liquid is not applied in as uniform quantities as desired unless frequent cleaning of the orifices is performed.

It is an object of this invention to provide a device for applying liquids to filamentary material which will be substantially free of clogging and which applies the liquid to the filamentary material with a minimum of frictional contact therewith. It is a further object of the invention to provide a form of liquid applying apparatus which is capable of the maximum effective use of the liquid in order to economize on consumption of the liquid, consumption of power and also in the amount of equipment necessary for handling the liquid treating operation. Further objects of the invention will appear. from the drawing and the description thereof which follows hereinafter.

4 Claims. (Cl. 68-205) portion, and a liquid deflecting portion 5 at the other end.

The liquid applying portion 4 is somewhat elevated with respect to the plane of the face of In the drawing, illustrative of the invention,

' Figure 1-shows a side view of one embodiment of theinvention,

Figure 2 shows a face view of the top oi the embodiment of Figure 1,

Figure 3 shows a detail of a modification of the invention.

The liquid treatment device of this invention is adapted for use with running'courses of file'- mentary material which are inclined at any angle to the horizontal. This angle of inclination of the courses of the filamentary material may be of the order of that shown in Figure 1 of the drawing, it may be considerably less, or it may be vertical. 4

In general, the device comprises a body portion 2 provided with a groove {in its face, a liquid applying portion 4 at one end of the body the body portion and is provided with a longitudinal groove 1 for guiding the filamentary material through the device. This portion also communicates with a nipple 8 and a bore 9 which terminates at the bottom of the groove so that any liquid may be directed into the filament guiding groove 'l'by means of a suitable conduit (not shown), such as a flexible hose, connected to the nipple. The bore 9 is preferably not of excessively small calibre since it is not intended to form a jet so that it is substantially free of clogging. The liquid applying section is brought down substantially to a point l0 which over-hangs the trough or groove 3 in the body of the device.

This pointed formation is shown more or less travels downwardly thereon to the filamentary guiding surface ll of the liquid deflecting por-' When tion 5 at the other end of the device. the filamentary material passes over this deflecting surface, the liquid is transferred therefrom onto the surface guide and flows about its convex face back to the end [2 from which it drains into any suitable receptable, such as a gutter or trough (not shown) on the liquid treatment machine. Figure 3 illustrates the device of Figures 1 and 2 in its simplest form, such as may be made of a readily machinable material, such as brass. When the device is made of such a-material, no dimculty is involved in obtaining a sumciently sharp point id to make eilective complete transfer or all the liquid from the liquid applying portion to the filamentary strands. 7

when, however. it is desired to make the device of other material, such as porcelain, the glazed portion of the surface of which presents entirely diiferent surface tension characteristics with respect to the liquid and also cannot be as sharply pointed as the press, it has been found that the liquid is not all transferred to the fila- 3 body portion of the device. In accordance with this invention, therefore, it has been found possible to entirely eliminate this difliculty by making a perforation l3 through the pointed structure l extending from the bottom of the guiding groove 1 to the underside M of the pointed structure l0 in a direction somewhat toward the point. It has been found that this perforation 13 causes a part of the liquid to fiow from the guiding groove I to the underside M of the pointed structure I0 and thence to the point itself where it is finally transferred with the rest of the liquid flowing through the roove 1 to the filamentary material, and no loss to groove 3 occurs.

The device may be provided with any form of member adapting it to be fastened to a machine. For example, a, dovetailed tongue l5 may be formed integrally with the body of the device. The trough 3 in the face of the body -of the device serves to convey any liquid dripping from the part I0 when no filamentary materialis present to the liquid deflecting portion of the device and hence to the liquid collecting receptacle for re-use or discharge to a sewer or recovery system, thereby preventing any loss of fluid when filamentary material is not being passed through the device, such as during the dofling and donning stages.

While it is preferred to pass the filamentary material upwardly with respect to the device, v

as shown in the drawing yet it is also applicable when the filamentary material proceeds in the other direction with respect thereto. The device may be employed to apply liquid to any filamentary material for any purpose whatsoever. For example, it may be employed to apply hot liquid, such as hot water or swelling or softening agents to filamentary material during what is generally called the stretch-spinning processes. It may be employed to apply washing liquids, desulphurizing liquids for regenerated cellulose from viscose, or after-treatment'liquid for any artificial silk, such as that regenerated from cuprammonium. Besides being useful for treating artificial filamentary material during or after its coagulation or regeneration, the device may be employed to apply liquids to artificial or natuparting from the spirit and scope of the inven-- tion as defined by the appended claims.

What we claim is:.

l. A device for treating filamentary material with liquid comprising a member having a pointed structure, a longitudinal filamentary guideway through said member terminating substantially at the point of said member, means for introducing liquid into said guideway, a second member having a liquid diverting surface spaced from said pointed structure and having at least a part thereof in substantial alignment with the bottom of said guideway, and a body member connecting the first-mentioned member with said secand. member, said body member having means for directing any drippings from said pointed structure to said liquid-diverting surface.

2-. A device for treating filamentary material with liquid comprising a member having a for introducing liquid into said guideway, and a perforation extending from the bottom of the guideway through said pointed structure.

3. A device for treating filamentary material I with liquid comprising a member having a pointed structure, a, longitudinal filamentary guideway through said member terminating substantially at the point of said member, means for introducing liquid into said guideway, a perforation extending from the bottom 'of the guideway through said pointed structure, and a second member having a liquid diverting surface spaced from said pointed structure and having at least a part thereof in substantial alignment with the bottom of said guideway.

4. A device for treating filamentary material with liquid comprising a member having a pointed structure, a longitudinal filamentary guideway through said member terminating substantially at the point of said member, means for introducing liquid into said guideway, a perforation extending from the bottom. of the guideway through said pointed structure, a second member having a liquid diverting surface spaced from said pointed structure and having at least a part thereof in substantial alignment with the bottom of said guideway, and a body member connecting the first-mentioned member with said second member, said body member having means for directing any drippings from said pointed structure to said liquid-diverting surface.

HENRY J. MCDERMOTT. RICHARD W. STANLEY. 

